Nathan, you seem clear that whatever stress you feel is a normal response to health issues. Shortness of breath while speaking is a significant clue since doesn't seem to be anxiety issued.
I'm not experienced, so
If I were in your situation I would ask for imaging studies with gadolinium contrast to help rule out spinal fluid leakage.
Shortness of breath while speaking can be one of the symptoms, especially when found in the presence of headache located in the back of the head that worsen toward evening.